The Bubble and the Star Cluster
To the eye,this cosmic compositionnicely balances theBubble Nebula at the right with open star cluster M52.The pair would be lopsided on other scales, though.Embedded in a complex ofinterstellar dustand gas and blown by the winds from a single, massiveO-type star,the Bubble Nebula, also known as NGC 7635, is amere 10 light-years wide.
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